Color-matching room



G. S. RADFORD. COLOR MATCHING ROOM. APPLICATION min nov. 23, 1921.

- Patented July 25, 1922.

WWW Merrie Parent oer GEORGE S. RADFORD, OF NEWYORK, N. 'Y., ASSIG-NOR,BY MESNI'I ASSIGNMENTS, TO CENTRAL UNION TRUST COMPANY NEW YORK, 01ENEVI YORK, N. Y., A C1033.-

PORATION OF ll'liltii YORK, TRUSTEE COLORPI VIATCHING- ROOM.

Specification of Letters Patent.

Fatented July 25, 19252.

tioned to properly illuminate the material to be examined and beingproperly shielded from the eyes-of the user, said room being keptsufliciently cool to be comfortable.

A practical embodiment of my invention is represented in theaccompanying drawings, in which- 7 i Fig. 1 represents partlyin top planand partly in horizontal section, my improved color matching room.

Fig. 2 represents a section taken in the plane of the line II-.II ofFig. 1, looking in the direction of the arrows. v

The floor of the room is denoted by 1, the ceiling by 2 and the sidewalls by 3. One of the side walls is broken away at one cor.- ner of theroom and a vertical partition 4; leading from the floor to theceilingextends inwardly from said broken-away side wall a sufficient distanceshort ofthe opposite sidewall to provide a passage-way 5, terminating inan entrance opening 6 into the matching chamber. Depending from theceiling about centrally thereof. 1 provide a tubular light shield 7which is herein shown as cylindrical in form, having its top and bottomends open. Within this tubular light shield 7 I provide a sourceof'artificial daylight, preferably artificial north sky? light asdistinguished from artificial noon sunlight. In the accompanyingdrawings 1 have shown a group of six powerful lamps 8, the lighting of'which iscontrolled by the switches 9 through the usual lightingcircuits, not shown herein. p

The light shield 7 extends downwardly from the ceiling a sufficientdistance to protect the eyes of the user. This preferably to a pointlocatedsomewhat below the eye level.

V The open top of the light shield is preferably provided with a louvre10 and the bottom of the light shield may be provided with a screen 11for diflusingthe light to reduce glare and resultingeye strain.

Openings in the ceiling of the room are preferably provided .withlouvres 12 for excluding exterior light from the. room and yetpermitting the ventilation thereof. An opening in one of the side wallsnear the bottom of the room may be provided with a louvre 13 in front ofwhich may be located any desired means for producing a forcedventilation of the roonusuch for instance as an electric fan 14- of wellknown or approved construction. f

One of the side walls of the room is also provided with an opening 15,provided with alight shield 16 through which opening a strip of materialmay be passed into position beneath the bottom of the light shield 7without the necessity of bringing the entire roll of'material into theroom.

The bottom of the roorn and the side walls for ,a predetermined{distance upwardly therefrom are preferably a flat-black, thisflat-black on the side walls preferably extending from the floor to apoint about in the same place as the bottom of the tubular light shield7, The ceiling, the exterior of the light shield and the remainingportions of the side walls are preferably a neutralgray.

A color matching room constructed and arranged substantially ashereinabove described provides for an ample artificial daylight withoutdanger of eye strain to the user. the room at the same time being amplyventilated without disturbing its usefulness. At the same time the roomis very convenient of access and egress.

It is evident that various changes may be resorted to in theconstruction, form and arrangement of the several'parts without deartingfrom the spirit and scope of my invention; hence, I do not wish to limitmyself to the particular embodiment herein shown and described, but

WVhat I claim is 1. A color matching room comprising a matching chamberhaving an entrance for. the user, a source of artificial daylight insaid chamber, and a tubular light shield surrounding the artificialdaylight source and of sufiicient length to protect the eyes of theuser.

2. A color matching room comprising amatching chamber having an entrancefor the user, a source of artificialdaylight in said chamber and atubular light shield surrounding the artificial daylight source and ofsufficient length to protect the eyes of the user, said room havingmeans for pro viding for the ventilation thereof.

3. A color matching room comprising a matching chamber having anentrance for the user, a source of artificial daylight in said. chamber,a tubular light shield surrounding the artificial daylight source and ofsulficient length to protect the eyes of the user, and a light diffusingscreen carried by the light shield.

A. A color matching room having a source of artificial daylight therein,and a tubular light shield surrounding the artificial daylight sourceand of suflicient length to protect the eyes of the user, the bottom ofsaid room and the sidewalls for a predetermined distance upwardlytherefrom 'be-ing fiatblack. I

5. A color matching room having a source of artificial daylight therein,and a tubular light shield surrounding the artificialdaylight: sourceand of sufiicient length to protect the eyes of the user, the bottom ofsaid room and the side walls for a predetermined. distance upwardlytherefrom being flatblack, and the ceiling, exterior of the light shieldand remaining portions of the side walls being neutral-gray.

6. A color matching room comprising a matching chamber having anentrance for the user, a source of artificial daylight in said chamber,a vertically disposed tubular light shield surrounding the artificialday-- light source and of sufficient length to protect the eyes of theuser, said room having a shielded opening through its side walls for thepassage therethrough of the strip of ma terial to be examined. I 7. Acolor matching room comprising a matching chamber having an entrance forthe user, a source of artificial daylight in said chamber, a verticallydisposed tubular light shield surrounding the artificial daylight sourceand, of sufficient length to protect the eyes of the user, said. roomhaving a shielded opening through itsside walls for the passagetherethrough of the strip of material to be examined, and a lightdiffusing screen carried by the light shield I 8. A color matching roomhaving a source of artificial daylight therein, and a verticallydisposed tubular light shield surrounding the artificial daylight sourceand projecting downwardly a sufficient distance below the normal eyelevel of the user to protect the said eyes, the bottom of the room beingflat-black, and also the side walls thereof extending upwardly to apoint substantially in the same plane as the bottom of the light shield.

9. A color matching room having a source of artificial daylight therein,and avertically disposed tubular light shield surround.- ing theartificial daylight source and projecting downwardly a sufficientdistance below the normal eye level of the user to protect the saideyes, the bottom of the room being flat-black, and also the side wallsthereof extending upwardly to a point substantially in the same plane asthe bottom of the light shield, and the ceiling, exterior of the lightshield and remaining wall surfaces being neutral-gray.

10. -A color matching room having a,

source of artificial daylight therein, and a vertically disposed tubularlight shield surrounding the artificial daylight source and projectingdownwardly a sufiicient distance below the normal eye level of the userto protect the said eyes. the bottom of the room being fiat-black, andalso the side walls thereof extending upwardly to a point substantiallyin the same plane as the bottom of the light shield, and the ceiling,exterior of the light shield and remaining wall surfaces beingneutral-gray, the said room also having means for providing for theventilation thereof.

11. A color matching room having a source of artificial daylighttherein, and a vertically disposed tubular light shield surrounding theartificial daylight source and projecting downwardly a sufficientdistance below the normal eye level of the user to protect the saideyes, the bottom of the room being flat-black, and also the side wallsthereof extending upwardly to a point substantially in the same plane asthe bottom of the light shield, the ceiling, exterior of the lightshield and remaining wall surfaces being neutral-gray, said room alsohaving means for providing for the forced ventilation thereof.

12. A color matching room having a source of artificial daylighttherein, and a vertically disposed tubular light shield surrounding theartificial daylight source and projecting downwardly a suflicient'distance below the normal eye level of the user to protect the saideyes, the bottom of the room being flat-black, and also the side wallsthereof extending upwardly to a point substantially in the same plane asthe bottom of the light shield, the ceiling, exterior of the lightshield and remaining wall surfaces being neutral-gray, the tubular lightshield being provided with a light diffusing screen.

In testimony that Iclaim the foregoing as my invention, I have signed myname this 19th day of November 1921.

GEORGE S. RADFORD.

